a.233: YfbU-like [116959] (1 superfamily)multihelical; consist of two subdomains; forms 24-mer with the N-terminal sudbomains packing around the 4-fold axis and the C-terminal domains interacting at the 2-fold and 3-fold axes

a.256: RUN domain-like [140740] (1 superfamily)multihelical; 3-helical bundle similar to one half of the DEATH domain fold is flanked by two alpha-hairpins forming a four-helical bundle; the axes of the three-helical and four-helical bundles are aproximately orthogonal to each other

a.290: PSPTO4464-like [158709] (1 superfamily)multihelical; consists of two subdomains at the ends of a long connecting helix

a.291: MG296-like [158714] (1 superfamily)multihelical; in crystal forms helical polymers by swapping the two N-terminal helices to the next subunit in polymer; three subunits per turn of polymer helix